It follows from (REF ) that \(Z_x^{(1,K)}[n,k]\)  represents the DFT of the circular shifted sequence \(x\)  with shift parameter \(n\) .
Using the circular shift property of the DFT given as [1]})
\(x[n-n_0] \Leftrightarrow e^{-j2\pi \frac{k}{K}n_0} X[k],\) 
